摘要
在HL 1M装置超声分子束注入实验中 ,利用在分子束注入口同一极向截面的上窗口处布局的一个 2 0道PIN探测器阵列所获得的多道Hα辐射信号 ,并借助于Abel变换算法反演出Hα辐射强度沿大半径方向的分布随时间的演变 ,对超声分子束在等离子体中的穿透特性和注入速度进行了分析和计算 .在气源气压大于 1MPa时 ,观察到超声分子束中性粒子已经进入到等离子体芯部 ,并获得束注入速度大于 1km
In plasma physics experiments of the HL 1M tokamak, an array with 20 PIN detectors is located on the top port of the device and is at a same poloidal cross section with the injection port of the supersonic molecular beam (SMB). The temporal evolution of distribution of Hα emission intensity along the plasma major radius has been obtained by means of the multi channel Hα emission signals and processed by Abel inversion method. The penetration characteristics and the injection speed of the molecular beam have been analyzed and estimated by the contour plot of the evolution of Hα emission intensity. It has been observed that the supersonic molecular beam has entered into the plasma center region. The average speed of the beam in the plasma is greater than 1km/s when the gas source pressure of SMB is greater that 1MPa on the HL 1M tokamak.
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
2002年第9期2074-2079,共6页
Acta Physica Sinica
基金
国家自然科学基金 (批准号 :19775 0 11
10 0 75 0 16)资助的课题~~
